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Part Number

Part Number:
NSN:
NIIN:
Item Name:
BOLT , SHOULDER

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO. 10 (0.190 IN.) (5 MM) OR LARGER. IT HAS A ROUND UNTHREADED NECK OR SHANK ALL OR PART OF WHICH IS OF GREATER DIAMETER THAN THE THREADED PORTION. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WITH A THREAD DIAMETER SMALLER THAN NO. 10 (0.190 IN.) (5 MM) AND THOSE ITEMS WITH AN INSERTED DRIVE HEAD, USE SCREW, SHOULDER. FOR ITEMS WHICH ARE NO. 10 (0.190 IN.) (5 MM) OR LARGER IN SIZE AND ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE BOLT, EXTERNALLY RELIEVED BODY. EXCLUDES THUMBSCREW.

CAGE Information

Code Company
06950 ALCOA GLOBAL FASTENERS INC. DBA ALCO

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASB FASTENER LENGTH 3.079 INCHES MINIMUM AND 3.109 INCHES MAXIMUM
AASU HEAD HEIGHT 0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
AAJD THREAD CLASS 3A
CWYB SHOULDER SHAPE ROUND FIRST SHOULDER
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 2.868 INCHES MINIMUM FIRST SHOULDER AND 2.918 INCHES MAXIMUM FIRST SHOULDER
AATN SHOULDER DIAMETER 0.4990 INCHES MINIMUM FIRST SHOULDER AND 0.4995 INCHES MAXIMUM FIRST SHOULDER
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL IRON ALLOY 660 OVERALL
THSD THREAD SERIES DESIGNATOR UNF
AASA THREAD LENGTH 0.569 INCHES MINIMUM AND 0.619 INCHES MAXIMUM
AASK HEAD STYLE DISHED HEXAGON
AHYM NOMINAL THREAD DIAMETER 0.438 INCHES
AAWB SHANK UNTHREADED HOLE DIAMETER 0.106 INCHES MINIMUM FIRST SHOULDER AND 0.116 INCHES MAXIMUM FIRST SHOULDER
CMLP THREAD QUANTITY PER INCH 20
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SFTT SURFACE TREATMENT PASSIVATE OVERALL
AATX SHOULDER LENGTH 2.490 INCHES MINIMUM FIRST SHOULDER AND 2.510 INCHES MAXIMUM FIRST SHOULDER

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